I've been with my DP for 2 years, we still live separately, due to having children from previous relationships, but we hope to move in together and integrate into one another's lives soon.
DP has two businesses - one as an electrician and one as a pet boarder / kennels. He has the kennels on his land which is attached to his house. I have been working from home since the pandemic. As I work from home, I quite frequently manage the pet boarding whilst he is working. I only work part-time so it is easy to work around the animals care needs. Sometimes that will involve being around the animals from 7am - 10pm. I don't mind doing this as he does a lot for me in return, he has offered money in the past but I have always refused. At the moment he only has one dog boarding in the kennels, but even with the one dog, it means I cannot go out anywhere for more than a couple of hours. I do find looking after the animals (dog on this occasion) very restrictive and boring, I usually end up sitting around watching the TV for hours. I obviously can't do any of my normal chores at home (washing, cleaning etc) as I am stuck at my DP's house for the day.
As it is lovely weather today, I suggested to my brother that he come over for dinner with my SIL and their 3 children. The children aren't rambunctious or destructive, and I always clean up after myself, in fact I will quite often do chores for DP (like wash and dry his clothes) because I am bored! I would also buy all food and drink so they wouldn't be eating him out of house and home. The dog would also not be an issue with the children and family members, this dog has boarded many times in the kennels and been present at BBQs etc.
I asked DP if he minded them coming over and he said he'd rather they didn't. AIBU to think this is a little unreasonable, considering I am doing him quite a huge favour frequently? Or should I just suck it up as it is his house and ultimately, it's his decision who comes round.